Why the other options are wrong:

• Cities never use their own symbols.: The discovery is that cities have flags, rather than a claim that cities never use symbols.
• Every city has the same flag.: The speaker learns that cities have their own flags, rather than that every city shares one flag.
• Only national governments can use flags.: The source discusses city flags, which does not support restricting flags to national governments.

Correct Answer: The water which means lakes and rivers.

Why this is correct: The blue stripes represent the lake and rivers, which are the city’s water.

Why the other options are wrong:

• The sky above the city.: The blue stripes are explicitly water rather than sky.
• The significant events of Chicago.: The source identifies lakes and rivers rather than significant events as what the stripes represent.
• The historical monuments in Chicago.: The stripes represent water rather than monuments.

Correct Answer: Every municipal building.

Why this is correct: The speaker explicitly says every municipal building flies the Chicago flag.

Why the other options are wrong:

• Every adult has emblazoned it on their messenger bag.: Messenger bags are personal belongings rather than public buildings. The source also refers to twenty-year-olds rather than every adult.
• Adults have got it embroidered on their hoodies.: Hoodies are clothing rather than public buildings.
• It can be seen in the cross-section of the city.: Citywide visibility is a broad statement rather than the specific type of public building requested.

Correct Answer: It is developed into the city's civic image.

Why this is correct: The speaker says the flag has become deeply embedded in the city’s civic imagery.

Why the other options are wrong:

• It is used while the cremation of fire-fighters.: The source discusses civic imagery; it does not identify cremation as the use that establishes significance.
• Police officers use to wear the colours of flag.: Police clothing is not the reason named for its significance; civic imagery is.
• It is referred to more often than the flag of UK.: The source’s comparison does not establish a claim about the United Kingdom flag.

Correct Answer: Because it is the pride of the city.

Why this is correct: The speaker identifies the flag as a distinctive symbol of Chicago’s pride. That explains why citizens value it.

Why the other options are wrong:

• Because it has a long history behind it.: The explanation emphasises civic pride rather than a long history.
• Because it represents their city.: Representing the city is broadly plausible, but the stated explanation for appreciation is Chicago’s pride.
• Because it has an easy and calm pattern.: An easy and calm pattern is not the reason given; the speaker emphasises pride.

Correct Answer: It should be so simple for even children to draw.

Why this is correct: The speaker says a flag should be so simple that a child can draw it from memory.

Why the other options are wrong:

• It should start from the top with some patterns.: No starting edge or arrangement of patterns is specified as this simplicity test.
• It should represent the image of country.: Representing a country is a separate idea, rather than the child-drawing simplicity test asked here.
• It should look very abstract and symbolic.: The speaker specifies simple drawing, rather than abstract symbolism.